DEA-C01 Data Ingestion and Transformation Practice Question

Exhibit

Refer to the exhibit. You have the following IAM policy attached to an IAM role used by an AWS Glue job:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:GetObject",
                "s3:PutObject"
            ],
            "Resource": "arn:aws:s3:::my-data-bucket/*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "glue:GetTable",
                "glue:UpdateTable"
            ],
            "Resource": "*"
        }
    ]
}

The Glue job attempts to read data from 's3://my-data-bucket/input/' and write to 's3://my-data-bucket/output/'. It also tries to update a table in the Glue Data Catalog. The job fails with an access denied error. What is the MOST likely cause?

⚠ Common exam trap

The trap here is that candidates focus on the Glue Data Catalog update action (Option B) or overly complex condition keys (Option C), but the immediate failure is due to the missing 's3:ListBucket' permission, which is a fundamental S3 permission required for any read operation that involves listing objects in a bucket.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The IAM role is missing the 's3:ListBucket' permission on the bucket.

The Glue job reads from 's3://my-data-bucket/input/' and writes to 's3://my-data-bucket/output/'. For S3 read/write operations, the IAM role must have 's3:ListBucket' permission on the bucket itself (my-data-bucket) to allow listing of objects, in addition to 's3:GetObject' and 's3:PutObject' on the object ARN. Without 's3:ListBucket', the job cannot enumerate objects in the input prefix, leading to an access denied error.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
The IAM role is missing the 's3:ListBucket' permission on the bucket.
Why this is correct
Glue needs ListBucket to read the list of objects in the prefix.
✗
The 'glue:UpdateTable' action is not allowed on the specific table.
Why it's wrong here
The policy allows UpdateTable on all resources.
✗
The policy is missing a condition key for the S3 bucket.
Why it's wrong here
No condition is required for these actions.
✗
The resource ARN does not include the bucket itself; it only covers objects.
Why it's wrong here
Glue jobs require object-level permissions, which are provided.

Quick reference

AWS S3 Storage Class Comparison

Storage Class	Min Duration	Retrieval	Use Case
S3 Standard	None	Immediate	Frequently accessed data
S3 Standard-IA	30 days	Immediate	Infrequent access, rapid retrieval
S3 One Zone-IA	30 days	Immediate	Non-critical infrequent data
S3 Intelligent-Tiering	None	Immediate–hours	Unknown or changing access patterns
S3 Glacier Instant	90 days	Milliseconds	Archive with instant retrieval
S3 Glacier Flexible	90 days	Minutes–hours	Archive, flexible retrieval
S3 Glacier Deep Archive	180 days	Hours	Long-term compliance archive

Go deeper

DEA-C01 Data Ingestion and Transformation Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

AWS S3 Storage Class Comparison

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